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论文编号:JD501 论文字数:18987,页数:48 附开题报告,外文翻译,文献综述,原理图
摘要
配料系统的精度直接影响生产效率，对配料方式的研究有利于提高配料精度、节约生产资料。研究采用MCS-51系列单片机8031控制八仓物料自动配比系统，包括其硬件组成和软件设计。通过对配料设备的研究，对配料控制系统的比较和探讨达到了简化控制系统，提高控制精度的目的。完成了元器件的选型和整体电路的设计，包括时钟电路、复位电路、键盘显示电路、采样电路等等。料仓重量检测时采用传感器并联组秤，检测到的数据与设定值和上次最终检测值比较得到本次配料重量，在一定程度上实现了智能化。软件设计采用多次取样求取平均值的方法降低了检测误差。键盘扫描时二次查询避免了抖动和干扰带来的误差。系统不仅造价低，而且基本上满足了精度要求。
关键词 配料 并联组秤 动态显示
Title Automatic Batching System that based on the Singlechip Microcomputer
Abstract
The accuracy of batching system directly affects the production efficiency, research the batching ways can improve batching accuracy and saving the means of production. Research using MCS-51 Series microcontroller 8031 control eight warehouses materials ratio automatic system ,Include the composing of hardware and design of software. By research the batching equipment, comparison the batching control system and explore achieve the purposes of simplified control system, improve control accuracy. Completion of the selection of the components and the overall circuit design, including clock circuit, reset circuit, keyboard display circuit, sampling circuit, and so on. warehouses weight detection sensors used parallel group balance, warehouses weight detection by sensors compared with the enactment and ultimate value of previous gained weight of this burden, to some extent achieve intelligent. Software adopt numbers sampling and strike the average number to reduce the error of detection. Second keyboard scan inquiries avoid the error caused by wobble and interference.the cost of the system is low and Basically meet the required of the precision.
Key Words batching parallel group balance dynamic display
目 录
1 引言……………………………………………………………………………………1
1.1 课题背景意义………………………………………………………………………1
1.2 国内外发展现状………………………………………………………………1
1.3 配料系统的发展趋势…………………………………………………………3
1.4 课题要求………………………………………………………………………4
1.5 本章小结………………………………………………………………………4
2 总体方案设计…………………………………………………………………………5
2.1 设备及生产流程介绍…………………………………………………………… 5
2.2 各配料元件比较和选型………………………………………………………… 6
2.3 配料控制系统的设计方案…………………………………………………………7
2.4 本章小结……………………………………………………………………………9
3 硬件系统设计…………………………………………………………………………10
3.1 CPU的选型及芯片简介……………………………………………………………10
3.2 时钟电路设计……………………………………………………………………11
3.3 复位电路设计……………………………………………………………………12
3.4 单片机存储器的扩展电路设计…………………………………………………14
3.5 传感器的选择和变送电路设计…………………………………………………15
3.6 A/D转换器的选择以及与单片机的连接………………………………………18
3.7 键盘和显示电路设计……………………………………………………………19
3.8 电动机的选择及其驱动电路……………………………………………………21
3.9 报警电路…………………………………………………………………………25
3.10 单片机I/O的扩展电路设计……………………………………………………25
3.11 本章小结…………………………………………………………………………26
4 软件系统设计…………………………………………………………………………27
4.1 主程序……………………………………………………………………………27
4.2 初始化子程序……………………………………………………………………27
4.3 键盘处理子程序…………………………………………………………………27
4.4 LED显示子程序……………………………………………………………………29
4.5 算法子程序………………………………………………………………………29
4.6 控制子程序………………………………………………………………………29
4.7 数据采集子程序…………………………………………………………………31
4.8 本章小结…………………………………………………………………………32
5 抗干扰设计………………………………………………………………………33
结论 ………………………………………………………………………………………34
致谢 …………………………………………………………………………………35
参考文献………………………………………………………………………………36
附录A 程序清单……………………………………………………………………… 37
附录 B 硬件电路图……………………………………………………………………42
